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(1/6)*x+1/2 = 5/6 // - 5/6
(1/6)*x+1/2-(5/6) = 0
(1/6)*x+1/2-5/6 = 0
1/6*x-1/3 = 0 // + 1/3
1/6*x = 1/3 // : 1/6
x = 1/3/1/6
x = 2
x = 2
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